// Copyright (c) 2008-2010 Raynaldo (Wildicv) Rivera, Joshua (Dark_Kilauea) Jones
// This file is part of the "cAudio Engine"
// For conditions of distribution and use, see copyright notice in cAudio.h

#include "../Headers/cAudioEffects.h"
#include "../Headers/cFilter.h"
#include "../Headers/cEffect.h"
#include "../Headers/cUtils.h"

#ifdef CAUDIO_EFX_ENABLED

//Number of effect slots to try to create
#define EFFECT_SLOTS_TO_TEST 256

namespace cAudio
{

cAudioEffects::cAudioEffects() : MaxEffectsSupported(0)
{
	for(int i=0; i<EET_COUNT; ++i)
		SupportedEffects[i] = false;

	for(int i=0; i<EFT_COUNT; ++i)
		SupportedFilters[i] = false;
}

cAudioEffects::~cAudioEffects()
{

}

IEffect* cAudioEffects::createEffect()
{
	cAudioMutexBasicLock lock(Mutex);
	IEffect* effect = CAUDIO_NEW cEffect(&EFXInterface);

	if(effect && effect->isValid())
		return effect;

	return NULL;
}

IFilter* cAudioEffects::createFilter()
{
	cAudioMutexBasicLock lock(Mutex);
	IFilter* filter = CAUDIO_NEW cFilter(&EFXInterface);

	if(filter && filter->isValid())
		return filter;

	return NULL;
}

unsigned int cAudioEffects::getMaxEffectsSupported() const
{
	return MaxEffectsSupported;
}

bool cAudioEffects::isEffectSupported(const EffectTypes& type) const
{
	return SupportedEffects[type];
}

bool cAudioEffects::isFilterSupported(const FilterTypes& type) const
{
	return SupportedFilters[type];
}

bool cAudioEffects::addEAXReverbEffectPreset(const char* name, const sEAXReverbParameters& setting)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	EAXReverbPresets[safeName] = setting;
	return true;
}

bool cAudioEffects::addReverbEffectPreset(const char* name, const sReverbParameters& setting)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	ReverbPresets[safeName] = setting;
	return true;
}

bool cAudioEffects::addChorusEffectPreset(const char* name, const sChorusParameters& setting)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	ChorusPresets[safeName] = setting;
	return true;
}

bool cAudioEffects::addDistortionEffectPreset(const char* name, const sDistortionParameters& setting)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	DistortionPresets[safeName] = setting;
	return true;
}

bool cAudioEffects::addEchoEffectPreset(const char* name, const sEchoParameters& setting)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	EchoPresets[safeName] = setting;
	return true;
}

bool cAudioEffects::addFlangerEffectPreset(const char* name, const sFlangerParameters& setting)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	FlangerPresets[safeName] = setting;
	return true;
}

bool cAudioEffects::addFrequencyShiftEffectPreset(const char* name, const sFrequencyShiftParameters& setting)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	FrequencyShiftPresets[safeName] = setting;
	return true;
}

bool cAudioEffects::addVocalMorpherEffectPreset(const char* name, const sVocalMorpherParameters& setting)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	VocalMorpherPresets[safeName] = setting;
	return true;
}

bool cAudioEffects::addPitchShifterEffectPreset(const char* name, const sPitchShifterParameters& setting)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	PitchShifterPresets[safeName] = setting;
	return true;
}

bool cAudioEffects::addRingModulatorEffectPreset(const char* name, const sRingModulatorParameters& setting)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	RingModulatorPresets[safeName] = setting;
	return true;
}

bool cAudioEffects::addAutowahEffectPreset(const char* name, const sAutowahParameters& setting)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	AutowahPresets[safeName] = setting;
	return true;
}

bool cAudioEffects::addCompressorEffectPreset(const char* name, const sCompressorParameters& setting)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	CompressorPresets[safeName] = setting;
	return true;
}

bool cAudioEffects::addEqualizerEffectPreset(const char* name, const sEqualizerParameters& setting)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	EqualizerPresets[safeName] = setting;
	return true;
}

sEAXReverbParameters cAudioEffects::getEAXReverbEffectPreset(const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	cAudioMap<cAudioString, sEAXReverbParameters>::Type::iterator it = EAXReverbPresets.find(safeName);
	if(it != EAXReverbPresets.end())
	{
		return it->second;
	}
	return sEAXReverbParameters();
}

sReverbParameters cAudioEffects::getReverbEffectPreset(const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	cAudioMap<cAudioString, sReverbParameters>::Type::iterator it = ReverbPresets.find(safeName);
	if(it != ReverbPresets.end())
	{
		return it->second;
	}
	return sReverbParameters();
}

sChorusParameters cAudioEffects::getChorusEffectPreset(const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	cAudioMap<cAudioString, sChorusParameters>::Type::iterator it = ChorusPresets.find(safeName);
	if(it != ChorusPresets.end())
	{
		return it->second;
	}
	return sChorusParameters();
}

sDistortionParameters cAudioEffects::getDistortionEffectPreset(const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	cAudioMap<cAudioString, sDistortionParameters>::Type::iterator it = DistortionPresets.find(safeName);
	if(it != DistortionPresets.end())
	{
		return it->second;
	}
	return sDistortionParameters();
}

sEchoParameters cAudioEffects::getEchoEffectPreset(const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	cAudioMap<cAudioString, sEchoParameters>::Type::iterator it = EchoPresets.find(safeName);
	if(it != EchoPresets.end())
	{
		return it->second;
	}
	return sEchoParameters();
}

sFlangerParameters cAudioEffects::getFlangerEffectPreset(const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	cAudioMap<cAudioString, sFlangerParameters>::Type::iterator it = FlangerPresets.find(safeName);
	if(it != FlangerPresets.end())
	{
		return it->second;
	}
	return sFlangerParameters();
}

sFrequencyShiftParameters cAudioEffects::getFrequencyShiftEffectPreset(const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	cAudioMap<cAudioString, sFrequencyShiftParameters>::Type::iterator it = FrequencyShiftPresets.find(safeName);
	if(it != FrequencyShiftPresets.end())
	{
		return it->second;
	}
	return sFrequencyShiftParameters();
}

sVocalMorpherParameters cAudioEffects::getVocalMorpherEffectPreset(const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	cAudioMap<cAudioString, sVocalMorpherParameters>::Type::iterator it = VocalMorpherPresets.find(safeName);
	if(it != VocalMorpherPresets.end())
	{
		return it->second;
	}
	return sVocalMorpherParameters();
}

sPitchShifterParameters cAudioEffects::getPitchShifterEffectPreset(const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	cAudioMap<cAudioString, sPitchShifterParameters>::Type::iterator it = PitchShifterPresets.find(safeName);
	if(it != PitchShifterPresets.end())
	{
		return it->second;
	}
	return sPitchShifterParameters();
}

sRingModulatorParameters cAudioEffects::getRingModulatorEffectPreset(const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	cAudioMap<cAudioString, sRingModulatorParameters>::Type::iterator it = RingModulatorPresets.find(safeName);
	if(it != RingModulatorPresets.end())
	{
		return it->second;
	}
	return sRingModulatorParameters();
}

sAutowahParameters cAudioEffects::getAutowahEffectPreset(const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	cAudioMap<cAudioString, sAutowahParameters>::Type::iterator it = AutowahPresets.find(safeName);
	if(it != AutowahPresets.end())
	{
		return it->second;
	}
	return sAutowahParameters();
}

sCompressorParameters cAudioEffects::getCompressorEffectPreset(const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	cAudioMap<cAudioString, sCompressorParameters>::Type::iterator it = CompressorPresets.find(safeName);
	if(it != CompressorPresets.end())
	{
		return it->second;
	}
	return sCompressorParameters();
}

sEqualizerParameters cAudioEffects::getEqualizerEffectPreset(const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	cAudioMap<cAudioString, sEqualizerParameters>::Type::iterator it = EqualizerPresets.find(safeName);
	if(it != EqualizerPresets.end())
	{
		return it->second;
	}
	return sEqualizerParameters();
}

void cAudioEffects::removeEffectPreset(const EffectTypes& type, const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	switch(type)
	{
	case EET_EAX_REVERB:
		EAXReverbPresets.erase(safeName);
		break;
	case EET_REVERB:
		ReverbPresets.erase(safeName);
		break;
	case EET_CHORUS:
		ChorusPresets.erase(safeName);
		break;
	case EET_DISTORTION:
		DistortionPresets.erase(safeName);
		break;
	case EET_ECHO:
		EchoPresets.erase(safeName);
		break;
	case EET_FLANGER:
		FlangerPresets.erase(safeName);
		break;
	case EET_FREQUENCY_SHIFTER:
		FrequencyShiftPresets.erase(safeName);
		break;
	case EET_VOCAL_MORPHER:
		VocalMorpherPresets.erase(safeName);
		break;
	case EET_PITCH_SHIFTER:
		PitchShifterPresets.erase(safeName);
		break;
	case EET_RING_MODULATOR:
		RingModulatorPresets.erase(safeName);
		break;
	case EET_AUTOWAH:
		AutowahPresets.erase(safeName);
		break;
	case EET_COMPRESSOR:
		CompressorPresets.erase(safeName);
		break;
	case EET_EQUALIZER:
		EqualizerPresets.erase(safeName);
		break;
	default:
		break;
	}
}

bool cAudioEffects::isEffectPresetRegistered(const EffectTypes& type, const char* name)
{
	cAudioMutexBasicLock lock(Mutex);
	cAudioString safeName = safeCStr(name);
	switch(type)
	{
	case EET_EAX_REVERB:
		return (EAXReverbPresets.find(safeName) != EAXReverbPresets.end());
		break;
	case EET_REVERB:
		return (ReverbPresets.find(safeName) != ReverbPresets.end());
		break;
	case EET_CHORUS:
		return (ChorusPresets.find(safeName) != ChorusPresets.end());
		break;
	case EET_DISTORTION:
		return (DistortionPresets.find(safeName) != DistortionPresets.end());
		break;
	case EET_ECHO:
		return (EchoPresets.find(safeName) != EchoPresets.end());
		break;
	case EET_FLANGER:
		return (FlangerPresets.find(safeName) != FlangerPresets.end());
		break;
	case EET_FREQUENCY_SHIFTER:
		return (FrequencyShiftPresets.find(safeName) != FrequencyShiftPresets.end());
		break;
	case EET_VOCAL_MORPHER:
		return (VocalMorpherPresets.find(safeName) != VocalMorpherPresets.end());
		break;
	case EET_PITCH_SHIFTER:
		return (PitchShifterPresets.find(safeName) != PitchShifterPresets.end());
		break;
	case EET_RING_MODULATOR:
		return (RingModulatorPresets.find(safeName) != RingModulatorPresets.end());
		break;
	case EET_AUTOWAH:
		return (AutowahPresets.find(safeName) != AutowahPresets.end());
		break;
	case EET_COMPRESSOR:
		return (CompressorPresets.find(safeName) != CompressorPresets.end());
		break;
	case EET_EQUALIZER:
		return (EqualizerPresets.find(safeName) != EqualizerPresets.end());
		break;
	default:
		return false;
		break;
	}
}

void cAudioEffects::removeAllEffectPresets(const EffectTypes& type)
{
	switch(type)
	{
	case EET_EAX_REVERB:
		EAXReverbPresets.clear();
		break;
	case EET_REVERB:
		ReverbPresets.clear();
		break;
	case EET_CHORUS:
		ChorusPresets.clear();
		break;
	case EET_DISTORTION:
		DistortionPresets.clear();
		break;
	case EET_ECHO:
		EchoPresets.clear();
		break;
	case EET_FLANGER:
		FlangerPresets.clear();
		break;
	case EET_FREQUENCY_SHIFTER:
		FrequencyShiftPresets.clear();
		break;
	case EET_VOCAL_MORPHER:
		VocalMorpherPresets.clear();
		break;
	case EET_PITCH_SHIFTER:
		PitchShifterPresets.clear();
		break;
	case EET_RING_MODULATOR:
		RingModulatorPresets.clear();
		break;
	case EET_AUTOWAH:
		AutowahPresets.clear();
		break;
	case EET_COMPRESSOR:
		CompressorPresets.clear();
		break;
	case EET_EQUALIZER:
		EqualizerPresets.clear();
		break;
	default:
		EAXReverbPresets.clear();
		ReverbPresets.clear();
		ChorusPresets.clear();
		DistortionPresets.clear();
		EchoPresets.clear();
		FlangerPresets.clear();
		FrequencyShiftPresets.clear();
		VocalMorpherPresets.clear();
		PitchShifterPresets.clear();
		RingModulatorPresets.clear();
		AutowahPresets.clear();
		CompressorPresets.clear();
		EqualizerPresets.clear();
		break;
	}
}

cEFXFunctions* cAudioEffects::getEFXInterface()
{
	return &EFXInterface;
}

void cAudioEffects::checkEFXSupportDetails()
{
	cAudioMutexBasicLock lock(Mutex);
	if(EFXInterface.Supported)
	{
		cAudioMutexBasicLock lock(EFXInterface.Mutex);

		//Count the number of effect slots this device supports (limits the max number of effects available)
		unsigned int count = 0;
		ALuint effectSlots[EFFECT_SLOTS_TO_TEST];
		for(count=0; count<EFFECT_SLOTS_TO_TEST; ++count)
		{
			EFXInterface.alGenAuxiliaryEffectSlots(1, &effectSlots[count]);
			if(alGetError() != AL_NO_ERROR)
				break;
		}

		MaxEffectsSupported = count;

		//Check what effects are supported
		ALuint Effect;
		EFXInterface.alGenEffects(1, &Effect);
		if (alGetError() == AL_NO_ERROR)
		{
			SupportedEffects[EET_NULL] = true;

			// Try setting Effect Type to known Effects
			EFXInterface.alEffecti(Effect, AL_EFFECT_TYPE, AL_EFFECT_REVERB);
			SupportedEffects[EET_REVERB] = (alGetError() == AL_NO_ERROR);

			EFXInterface.alEffecti(Effect, AL_EFFECT_TYPE, AL_EFFECT_EAXREVERB);
			SupportedEffects[EET_EAX_REVERB] = (alGetError() == AL_NO_ERROR);

			EFXInterface.alEffecti(Effect, AL_EFFECT_TYPE, AL_EFFECT_CHORUS);
			SupportedEffects[EET_CHORUS] = (alGetError() == AL_NO_ERROR);

			EFXInterface.alEffecti(Effect, AL_EFFECT_TYPE, AL_EFFECT_DISTORTION);
			SupportedEffects[EET_DISTORTION] = (alGetError() == AL_NO_ERROR);

			EFXInterface.alEffecti(Effect, AL_EFFECT_TYPE, AL_EFFECT_ECHO);
			SupportedEffects[EET_ECHO] = (alGetError() == AL_NO_ERROR);

			EFXInterface.alEffecti(Effect, AL_EFFECT_TYPE, AL_EFFECT_FLANGER);
			SupportedEffects[EET_FLANGER] = (alGetError() == AL_NO_ERROR);

			EFXInterface.alEffecti(Effect, AL_EFFECT_TYPE, AL_EFFECT_FREQUENCY_SHIFTER);
			SupportedEffects[EET_FREQUENCY_SHIFTER] = (alGetError() == AL_NO_ERROR);

			EFXInterface.alEffecti(Effect, AL_EFFECT_TYPE, AL_EFFECT_VOCAL_MORPHER);
			SupportedEffects[EET_VOCAL_MORPHER] = (alGetError() == AL_NO_ERROR);

			EFXInterface.alEffecti(Effect, AL_EFFECT_TYPE, AL_EFFECT_PITCH_SHIFTER);
			SupportedEffects[EET_PITCH_SHIFTER] = (alGetError() == AL_NO_ERROR);

			EFXInterface.alEffecti(Effect, AL_EFFECT_TYPE, AL_EFFECT_RING_MODULATOR);
			SupportedEffects[EET_RING_MODULATOR] = (alGetError() == AL_NO_ERROR);

			EFXInterface.alEffecti(Effect, AL_EFFECT_TYPE, AL_EFFECT_AUTOWAH);
			SupportedEffects[EET_AUTOWAH] = (alGetError() == AL_NO_ERROR);

			EFXInterface.alEffecti(Effect, AL_EFFECT_TYPE, AL_EFFECT_COMPRESSOR);
			SupportedEffects[EET_COMPRESSOR] = (alGetError() == AL_NO_ERROR);

			EFXInterface.alEffecti(Effect, AL_EFFECT_TYPE, AL_EFFECT_EQUALIZER);
			SupportedEffects[EET_EQUALIZER] = (alGetError() == AL_NO_ERROR);
		}

		// Delete Effect
		EFXInterface.alDeleteEffects(1, &Effect);

		// Generate a Filter to use to determine what Filter Types are supported
		ALuint Filter;
		EFXInterface.alGenFilters(1, &Filter);
		if (alGetError() == AL_NO_ERROR)
		{
			SupportedFilters[EFT_NULL] = true;

			// Try setting the Filter type to known Filters
			EFXInterface.alFilteri(Filter, AL_FILTER_TYPE, AL_FILTER_LOWPASS);
			SupportedFilters[EFT_LOWPASS] = (alGetError() == AL_NO_ERROR);

			EFXInterface.alFilteri(Filter, AL_FILTER_TYPE, AL_FILTER_HIGHPASS);
			SupportedFilters[EFT_HIGHPASS] = (alGetError() == AL_NO_ERROR);

			EFXInterface.alFilteri(Filter, AL_FILTER_TYPE, AL_FILTER_BANDPASS);
			SupportedFilters[EFT_BANDPASS] = (alGetError() == AL_NO_ERROR);
		}

		// Delete Filter
		EFXInterface.alDeleteFilters(1, &Filter);

		//Cleanup the slots we created
		while(count > 0)
		{
			EFXInterface.alDeleteAuxiliaryEffectSlots(1, &effectSlots[--count]);
		}
	}
}

};

#endif